385511115 has 16 divisors (see below), whose sum is σ = 672892416. Its totient is φ = 186914400.

The previous prime is 385511111. The next prime is 385511129. The reversal of 385511115 is 511115583.

It is not a de Polignac number, because 385511115 - 2² = 385511111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385511111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1168051 + ... + 1168380.

It is an arithmetic number, because the mean of its divisors is an integer number (42055776).

Almost surely, 2^385511115 is an apocalyptic number.

385511115 is a deficient number, since it is larger than the sum of its proper divisors (287381301).

385511115 is a wasteful number, since it uses less digits than its factorization.

385511115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336450.

The product of its digits is 3000, while the sum is 30.

The square root of 385511115 is about 19634.4369667174. The cubic root of 385511115 is about 727.8004191408.

Adding to 385511115 its reverse (511115583), we get a palindrome (896626698).

The spelling of 385511115 in words is "three hundred eighty-five million, five hundred eleven thousand, one hundred fifteen".